돌아다니다 is moving from place to place with no fixed destination — sightseeing, hanging around a neighbourhood, or, of pictures online, circulating. -게 gives the manner: 자유롭게 돌아다니다 (move about freely) appears twice, and 알차게 돌아다닌 마지막 하루 is a last day packed full of getting around. 압구정동 요즘 왜 이렇게 돌아다녀? teases someone for being seen out there so often.